<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style>
			　.img-box {
			                padding-bottom: 100%;
			            }
			
			            .img-box img {
			                position: absolute;
			                top: 0;
			                bottom: 0;
			                left: 0;
			                right: 0;
			                width: 100%;
			                margin:auto;
			            }
		</style>
	</head>
	<body>
		<div class="img-box">
			<img src="img/1.png" >
		</div>
	</body>
</html>
